Labglass Filter Flask 1000ml with Plastic Screw Thread [2642]

The Labglass 1000ml Filter Flask is a high‑quality conical vacuum flask manufactured from durable 3.3 borosilicate glass, designed for safe and efficient filtration work in educational and laboratory environments. Featuring an integral side arm and a secure plastic screw thread, this flask is ideal for use with vacuum pumps and Büchner filtration setups.

The integrated side arm is sized to accept tubing with an 8mm internal diameter, making it compatible with standard laboratory vacuum hoses. The flask has a wide 40mm internal neck diameter, allowing easy fitting of funnels, rubber stoppers, or adapters. Its robust, bubble‑free construction provides excellent resistance to thermal shock and chemical attack, ensuring long service life in busy school and college laboratories.

With a generous 1000ml capacity, this filter flask is particularly well suited to medium‑to‑large volume filtration tasks, demonstrations, and routine practical work. The plastic screw thread adds convenience and security when used with compatible filtration accessories.

Key Features

• 1000ml capacity conical filter flask
• Manufactured from 3.3 borosilicate glass
• Integral side arm for vacuum filtration
• Side arm fits tubing with 8mm internal diameter
• Plastic screw thread for secure fittings
• Wide 40mm internal neck diameter
• Excellent resistance to heat, chemicals, and vacuum use
• Bubble‑free glass for clarity and durability

Compatible Stoppers & Accessories

• 2748 – Solid rubber stopper, 40mm
• 2749 – 1‑hole rubber stopper, 40mm
• 2750 – 2‑hole rubber stopper, 40mm
• 2165 – Rubber cone (Internal 40/27mm, External 46/32mm) for flask neck 39/44mm

Ideal for School Science & Chemistry Lessons

The Labglass 1000ml Filter Flask is ideal for KS3, GCSE, and A‑Level chemistry lessons, where filtration and separation techniques are taught. Its robust design and clear visibility make it suitable for both student practical work and teacher‑led demonstrations.

• Carrying out vacuum filtration experiments
• Separating solids from liquids efficiently
• Demonstrating laboratory filtration techniques
• Supporting quantitative and qualitative analysis
• Teaching correct use of vacuum glassware

Reliable, durable, and designed for educational use, the Labglass 1000ml Filter Flask with Plastic Screw Thread is an essential piece of laboratory glassware that supports safe, effective, and high‑quality practical science teaching.